I. Core Principles

Follow the paver closely, roll at high temperature, keep uniform speed and coordination, no collision, no interference.

II. Specific Key Points

Rolling timing

• Roll immediately behind the paver while the asphalt mixture is at the highest temperature to ensure compaction effect.

• The distance between roller and paver should not be too far, generally controlled within 3–5 m.

Travel speed

• Roller speed must match the paver speed, keep constant speed, no sudden changes.

• Over-speed, sudden stop and sudden start are prohibited to avoid pavement shoving and bulging.

No collision with paver

• Rollers must not hit or bump the paver, especially the paver track and screed.

• Observe in advance when reversing and turning, and keep a safe distance.

Rolling sequence and direction

• Roll from low to high, from edge to center.

• Keep the rolling direction the same as the paver; avoid random oblique rolling.

Standard operation for starting, stopping and turning

• Turn, start and stop on the compacted, cooler pavement.

• U-turn on hot mixture, sudden braking and long-time stopping are strictly prohibited.

Coordination in echelon paving

• When multiple pavers work in echelon, rollers compact the longitudinal joints first, then the full width.

• Overlap rolling at joints to ensure full compaction and prevent cracking and water penetration.

Equipment coordination and command

• Unified command; rollers do not interfere, compete for lanes or roll randomly.

• Special person in charge with good visibility to avoid blind-area accidents.

Rolling quality control

• Follow the sequence: initial rolling → intermediate rolling → final rolling; no missing, insufficient or over-compaction.

• Keep rolling continuous, uniform and standard to ensure density and smoothness.